SYSTEM FOR CHANGING CALL FOR EXTENSION LINE TELEPHONE SET,申请号JP19870299169-传众专利搜索

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发明名称	SYSTEM FOR CHANGING CALL FOR EXTENSION LINE TELEPHONE SET
摘要
申请公布号	JPH01140847(A)	申请公布日期	1989.06.02
申请号	JP19870299169	申请日期	1987.11.27
申请人	NEC CORP	发明人	SAKURAI HISAYO
分类号	H04M3/46	主分类号	H04M3/46
代理机构		代理人
主权项
地址

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